@TheBlueBettaFish;
What colors do you prefer to produce? If you like solid colors, I would not breed him to a red. If both have basic genetic color back grounds, you will mostly produce blue with red fins - a common traditional color combo. You won't produce any special patterns (google to see pictures).

But if you want a combination of colors, then pair him to a multi colored female with the preferred pattern. If you want surprises, get a multi colored dragon - you will get a bunch of color combo's.